Beginner's Help

[SakamotoKazuma]

I am new to programming in python after programming in Java, C and C# for a number of years. Somehow I'm missing something or am doing something wrong, but this Pythagorean theorem program is giving me wrong answers.

print "Pythagorean Solver"
print "Enter -1 for unknown values."

A = input("A? ")
B = input("B? ")
C = input("C? ")

if A == -1:
	if B == -1:
		print "Too many unknowns."
		sys.exit()
	if C == -1:
		print "Too many unknowns."
		sys.exit()
	else:
		D = (C**2-B**2)**(1/2)
		print "A = ",D
		 
if B == -1:
	if A == -1:
		print "Too many unknowns."
		sys.exit()
	if C == -1:
		print "Too many unknowns."
		sys.exit()
	else:
		D = (C**2-A**2)**(1/2)
		print "B = ", D
		
if C == -1:
	if A == -1:
		print "Too many unknowns."
		sys.exit()
	if B == -1:
		print "Too many unknowns."
		sys.exit()
	else:
		D = (A**2 + B**2)**(1/2)
		print "C = ", D

else:
	print "Nothing to solve."

[bvdet]

I am new to programming in python after programming in Java, C and C# for a number of years. Somehow I'm missing something or am doing something wrong, but this Pythagorean theorem program is giving me wrong answers.

print "Pythagorean Solver"
print "Enter -1 for unknown values."

A = input("A? ")
B = input("B? ")
C = input("C? ")

if A == -1:
	if B == -1:
		print "Too many unknowns."
		sys.exit()
	if C == -1:
		print "Too many unknowns."
		sys.exit()
	else:
		D = (C**2-B**2)**(1/2)
		print "A = ",D
		 
if B == -1:
	if A == -1:
		print "Too many unknowns."
		sys.exit()
	if C == -1:
		print "Too many unknowns."
		sys.exit()
	else:
		D = (C**2-A**2)**(1/2)
		print "B = ", D
		
if C == -1:
	if A == -1:
		print "Too many unknowns."
		sys.exit()
	if B == -1:
		print "Too many unknowns."
		sys.exit()
	else:
		D = (A**2 + B**2)**(1/2)
		print "C = ", D

else:
	print "Nothing to solve."

Instead of '1/2' for the power, use '0.5' or '1/2.0'. You were performing integer division. Look at this example:[code=Python]>>> 100**(1/2)
1
>>> 1/2
0
>>> 100**0
1
>>> 100**0.5
10.0
>>> [/code]